Why does the Welsh flag have a dragon on it?
The tale is told by Nennius in the Historia Britonum. It’s a story of the Red Dragon of Wales v the White Dragon of England.The dragons remain at Dinas Emrys for centuries until King Vortigern tries to build a castle there. Every night the castle walls and foundations are demolished by unseen forces. Vortigern consults his advisers, who tell him to find a boy with no natural father, and sacrifice him. Vortigern finds such a boy (who is later, in some tellings, to become Merlin) who is supposed to be the wisest wizard to ever live. On hearing that he is to be put to death to solve the demolishing of the walls, the boy dismisses the knowledge of the advisors. The boy tells the king of the two dragons. Vortigern excavates the hill, freeing the dragons. They continue their fight and the red dragon finally defeats the white dragon. The boy tells Vortigern that the white dragon symbolises the Saxons and that the red dragon symbolises the people of Vortigern. If Vortigern is accepted to have
